Lanonia hexasepala

Family: Arecaceae    Palm Tree

Common Name: None known

Scientific Synonymy:
Licuala hexasepala

Common Synonymy:
sai

Cold Hardiness Zone: 9b     View the UK and US zone maps

Identification:
Stems solitary or clustered, 1.5-2 m tall, 2 cm diameter, erect, densely covered with flat, black scales. Leaves 6; leaf sheaths 7-15 cm long, densely covered with flat, black scales, extended above the petioles into 9-17 cm long auricles; petioles 16-47 cm long, scaly as the sheaths, the proximal ca. half with closely to widely spaced, recurved, black spines 0.2-0.6 cm long, these sometimes bifid; blades 20 cm wide, split into 10-14 segments, with numerous, minute reddishbrown scales abaxially, with straight sides; costas 0.5-1.5 cm long; middle segment split almost to the base of the blade (to apex of costa) into 2 lobes, these not wider than the other segments, 13-23 cm long, 2.5-3 cm wide at the apices; indentations leading to adaxial folds 1-1.5 cm deep, those leading to abaxial folds 0.4-0.6 cm deep, indentations deeper on lateral segments. Inflorescences 60 cm long, erect among the leaves; prophylls 16 cm long; peduncles not seen; rachis absent, with 1 partial inflorescence, this branched to 1 order in pistillate plants, 2 orders in staminate plants, subtended by narrow, tubular, scarcely brown tomentose rachis bracts, these splitting apically; staminate rachillae 21 on each partial inflorescence, 12-18.5 cm long, ca. 0.5 mm diameter, minutely hairy; floral stalks scarcely developed, borne in groups of 2-3, each subtended by small, ciliate bracteoles; staminate flower buds 1-1.5 mm long, globose; calyces 0.8-1.2 mm long, cupular, gibbous, 3-lobed at the apices, sparsely hairy; corollas 0.6-1 mm long, split completely to the base into 3, valvate petals, glabrous; staminal rings short; filaments free for 0.1-0.2 mm; anthers 0.2 mm long; pistillate rachillae 10-12 on each partial inflorescence, 4-10 cm long, 0.5-0.7 mm diameter, minutely hairy; floral stalks scarcely developed, solitary, each subtended by small bracteoles; pistillate flower buds 1.5 mm long, oblong; calyces 1.5 mm long, gibbous, 3-lobed at the apices with each lobe splitting again as the fruits develop and becoming 6-lobed, minutely and sparsely hairy; corollas ca. 1 mm long, split to the base into 3 petals, these spreading horizontally as the fruits develop, glabrous; staminal rings absent, with vestigial filaments; pistils ca. 0.3 mm long including a 0.1 mm long style, glabrous. Fruits 0.6-0.7 cm diameter, globose, colour not known, epicarp warty.

Work in progress
Species Information currently being revised!

Distribution:

Native to, Vietnam

Endemic to southern Vietnam (Dak Lak, Khanh Hoa, Lam Dong) in primary, wet, mixed forest or cloud forest on steep, rocky slopes at 1,250-1,700 m elevation.

Location: Vietnam (12.321398°N, 108.588867°E)

Observations
Map may not represent the complete natural distribution. (Markers display observation data).
Lanonia hexasepala Overlay Image ©2017 Trebrown - No re-distribution without permission.


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